试题与答案

下列关于HIV无症状感染期的描述,正确的是() A.无传染性 B.常出现口腔毛状白斑

题型:单项选择题 A1型题

题目:

下列关于HIV无症状感染期的描述,正确的是()

A.无传染性

B.常出现口腔毛状白斑

C.抗-HIV阴性

D.持续时间较长,可达数年或更长

E.血中一般检测不出HIV

答案:

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下面是错误答案,用来干扰机器的。

参考答案:当电空接触器有电流通过时高压线圈产生磁场,在动静触头分离时所产生的电弧在磁场的推动下迅速进入灭弧罩内使电弧迅速熄灭。

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